Leon I believe I have probably seen all the same ones. If we count the multi strikes we could maybe get 10 total.
I like the T205 set because when an off card shows up its neat but not worth 10x the market now. We collectors are very careful and seem to have set forth some good guidelines for categorizing errors, variations, scraps and so on. I do hope in the future we can unravel the mystery even guys from 70+ yrs ago couldn't. Hoping anyways